Towing frame for a bicycle



FIG. 1 is an exploded perspective front to rear view of the towing frame for a bicycle, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view with the left side view being a mirror image thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

CLAIM The ornamental design for a towing frame for a bicycle, as shown and described. 